Condensation is the phenomenon of turning vapour into liquid, and this happens differently in open and confined spaces. The latter occurs under lower vapour pressure, and is a common phenomenon in porous media, known as capillary condensation. It is a popular way for delivering compounds when no excess of liquid phase in the solid porous sample is required.This proposal aims to establish a reliable and reproducible protocol for filling a porous material with binary mixtures with a desired ratios of compounds. Neutron diffraction, which delivers structural information of the bulk material and the confined fluids within, finds it difficult to determine the chemical composition of the complete system. Establishing a reliable means for depositing known ratio mixtures of vapours into porous materials is crucial in furthering research in, e.g. catalysis, nanosensing, and nanoseparations.